參數(shù)資料
型號： PT78HT253
英文描述： Half Bridge Driver, LO In Phase with RT, Programmable Oscillating Frequency, 1.2us Deadtime in a 8-lead SOIC package
中文描述： 5.25Vout 2Amp寬輸入正降壓ISR的
文件頁數(shù)： 1/3頁
文件大?。?/td> 122K
代理商： PT78HT253
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
2 Amp Positive Step-Down
Integrated Switching Regulator
PT78HT200 Series
Standard Application
C1 = Optional 1μF ceramic
C2
= Required 100μF electrolytic
(1)
Pin-Out Information
Pin
1
2
3
Function
V
i
n
GND
V
out
Ordering Information
PT78HT2
Output Voltage
33
= 3.3 Volts
05
= 5.0 Volts
53
= 5.25 Volts
65
= 6.5 Volts
08
= 8.0 Volts
XX
Y
Package Suffix
V
= Vertical Mount
S
= Surface Mount
H
= Horizontal
Mount
High Efficiency: Up to 90%
Wide Input Range
Self-Contained Inductor
Short-Circuit Protection
Over-Temperature Protection
Fast Transient Response
The PT78HT200 is a series of fixed
output, wide-input range, 3-terminal
Integrated Switching Regulators (ISRs).
These ISRs have a maximum output
current of 2A. The output voltage is
also laser trimmed for high accuracy.
Features include excellent line and
load regulation, internal short-circuit
and over-temperature protection.
The PT78HT200 series is available
in three package outlines, including
horizontal SMD. Their small size and
output voltage selection makes these
regulators ideal for use in a variety
of applications.
PT78HT200
C2
+
Vout
COM
COM
Vin
C1
1
2
3
Pkg Style 500
SLTS057B
(Revised 10/15/2000)
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
Short Circuit Current
Input Voltage Range
PT78HT200 SERIES
Symbols
I
o
I
sc
V
in
Conditions
Over V
in
range
V
in
= V
in
min
0.1
≥
I
o
≥
2.0A
Min
0.1
(2)
—
9
9
10.5
12
—
Typ
6.0
—
—
—
—
±1.0
Max
2.0
—
15
28
28
28
±2.0
Units
A
Apk
V
o
=3.3V
V
o
=5.0V
V
o
=6.5V
V
o
=8.0V
V
Output Voltage Tolerance
V
o
Over V
range, I
o
= 2.0A
T
a
= 0°C to +60°C
Over V
in
range
0.1
≤
I
o
≤
2.0A
V
in
= V
in
min, I
o
= 2.0A
50% load change
Vo over/undershoot
V
in
=9V, I
o
= 2.0A
V
in
=12V, I
o
=2.0A
V
in
=15V, I
o
=2.0A
Over V
in
and I
o
ranges
%Vo
Line Regulation
Load Regulation
Vo
Ripple/Noise
Transient Response
(with 100μF output cap)
Efficiency
Reg
line
Reg
load
V
n
t
tr
—
—
—
—
±0.4
±0.2
±1
100
5.0
80
85
90
750
1,000
—
±0.8
±0.4
—
—
%Vo
%Vo
%Vo
μSec
%Vo
η
V
o
=3.3V
V
o
=5.0V
V
o
=8.0V
V
o
≥
5.0V
V
o
=
3.3V
—
—
—
700
950
-40
—
—
—
800
1,050
+85
(3)
%
Switching Frequency
o
kHz
Absolute Maximum
Operating Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
Mechanical Vibration
T
a
Over V
in
range
°C
θ
ja
T
s
—
—
Free Air Convection, (40-60LFM)
—
Per Mil-STD-883D, Method 2002.3
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
—
-40
—
—
40
—
500
5
—
+125
—
—
°C/W
°C
G’s
G’s
Weight
—
—
6.5
—
Grams
Notes:
(1) The PT78HT200 Series requires a 100μF electrolytic or tantalum output capacitor for proper operation in all applications.
(2) ISR will operate down to no load with reduced specifications.
(3) See Safe Operating Area curves for derating
相關(guān)PDF資料
PDF描述
PT78HT265 Half Bridge Driver, LO In Phase with RT, Programmable Oscillating Frequency, 1.2us Deadtime in a 8-lead SOIC package
PT78NR212 IR2172S is not recommended for new designs.
PT78NR215 -15V. 10-12W Plus to Minus Voltage ISR
PT78NR252 Not recommended for new designs. For new designs, we recommend IR3081AM.
PT78NR103 Half Bridge Driver, LO In Phase with RT, Programmable Oscillating Frequency, 1.2us Deadtime in a 8-pin DIP package
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT78HT253H 功能描述:DC/DC轉(zhuǎn)換器 5.25Vout 2A Wd-Inp Pos Step-Down ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78HT253S 功能描述:DC/DC轉(zhuǎn)換器 5.25Vout 2A Wd-Inp Pos Step-Down ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78HT253V 功能描述:DC/DC轉(zhuǎn)換器 5.25Vout 2A Wd-Inp Pos Step-Down ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PT78HT265 制造商:未知廠家 制造商全稱:未知廠家 功能描述:6.5Vout 2Amp Wide-Input Positive Step-Down ISR
PT78HT265H 功能描述:DC/DC轉(zhuǎn)換器 6.5Vout 2A Wide-Inpt Pos Step-Down ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
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